* {
    padding: 0;
    margin: 0;
}

input {
    outline: none;
}

body {
    background-color: #f3f5f7;
    height: 3000px;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
}

.clearfix:before,
.clearfix:after {
    /*伪元素是行内元素 正常浏览器清除浮动方法*/
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}


/* ———————————————— 版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。 原文链接：https: //blog.csdn.net/h_qingyi/article/details/81269667 */
.w {
    width: 1200px;
    margin: auto auto;
}

.heder {
    height: 41px;
    margin: 30px auto;
    line-height: 41px;
}

.heder .logo {
    float: left;
}

.heder ul {
    float: left;
    margin-left: 56px;
    margin-right: 80px;
}

.heder ul li {
    float: left;
    padding: 0 14px;
}

.heder ul li a {
    padding: 0 8px;
    height: 39px;
    display: inline-block;
    color: black;
}

.heder ul li:hover {
    border-bottom: 2px solid #00a3fa;
}

.heder .search {
    height: 41px;
    width: 412px;
    float: left;
}

.heder .search input {
    height: 39px;
    width: 340px;
    border: #00a3fa 1px solid;
    border-right: 0px none;
    padding-left: 20px;
    float: left;
    font-size: 14px;
    color: #bfbfbf;
}

.heder .search button {
    width: 50px;
    height: 41px;
    float: left;
    border: 0;
}

.heder .user {
    float: right;
    line-height: 41px;
    margin-right: 50px;
    font-size: 14px;
    color: #666;

}

.banner {
    height: 420px;
    background-color: #1c036b;
}

.banner .w {
    height: 420px;
    background: url(images/banner2.png) no-repeat top center;
}

.banner .subnav {
    height: 406px;
    width: 150px;
    float: left;
    background-color: rgba(0, 0, 0, 0.3);
    padding: 7px 20px 7px 20px;
}

.banner .subnav ul li {
    height: 45px;
    line-height: 45px;
}

.banner .subnav ul li a:hover {
    color: #00c2ff;
}

.banner .subnav li a {
    color: #fff;
}

.banner .subnav li a span {
    float: right;
}

.banner .course {
    background-color: #fff;
    height: 300px;
    width: 228px;
    float: right;
    margin-top: 50px;
}

.banner .course h2 {
    color: #fff9fb;
    height: 48px;
    line-height: 48px;
    text-align: center;
    background-color: #9bceeb;
    font-size: 18px;
}

.banner .course .bd {
    padding: 0 20px;
}

.banner .course .bd ul li {
    padding: 14px 0;
    border-bottom: 1px solid #ccc;
}

.banner .course .bd ul li h4 {
    color: #4e4e4e;
    font-size: 16px;
}

.banner .course .bd ul li p {
    color: #a5a5a5;
    font-size: 12px;
}

.banner .course .bd .more {
    height: 38px;
    border: 1px solid #00a4ff;
    display: block;
    text-align: center;
    line-height: 38px;
    color: #00a4ff;
    margin-top: 5px;
}

.goods {
    height: 60px;
    background-color: #fff;
    box-shadow: 0 2px 3px 3px rgba(0, 0, 0, 0.1);
    margin-top: 10px;
    line-height: 60px;
    text-align: center;
}

.goods h3 {
    float: left;
    margin-left: 30px;
    font-size: 16px;
    color: #00a4ff;
}

.goods ul {
    float: left;
}

.goods .mod {
    float: right;
    margin-right: 30px;
    font-size: 16px;
    color: #00a4ff;
}

.goods ul li {
    float: left;
    margin-left: 30px;
}

.goods ul li a {
    padding: 0 30px;
    font-size: 16px;
    color: #050505;
    border-left: 1px solid #ccc;
}

.box {
    margin-top: 30px;
}

.box .hd {
    height: 45px;
}

.box h3 {
    float: left;
    font-size: 20px;
    color: #494949;
}

.box a {
    float: right;
    font-size: 12px;
    color: #a5a5a5;
    margin: 15px 30px 0 0;
}

.box .bd ul {
    width: 1225px;
}

.box .bd ul li {
    position: relative;
    width: 228px;
    height: 270px;
    background-color: #ffffff;
    float: left;
    margin-right: 15px;
    margin-bottom: 15px;
}

.box .bd ul li .hot {
    position: absolute;
    top: 10px;
    right: -4px;
}

.box .bd ul li .new {
    position: absolute;
    top: 10px;
    right: -4px;
}

.box .bd ul li div img {
    width: 228px;
    height: 155px;
}

.box .bd ul li .img {
    width: 228px;
    height: 155px;
}

.box .bd ul li .text {
    height: 115px;
    margin: 0 28px 0 25px;
}

.box .bd ul li .text h3 {
    font-size: 16px;
    font-weight: 400;
    color: #050505;
    margin: 25px 0 19px 0;
}

.box .bd ul li .text p {
    font-size: 14px;
    color: #9c9c9c;
}

.box .bd ul li .text p span {
    color: #ff6f0c;
}

.footer {
    height: 415px;
    background-color: #fff;
}

.footer .version {
    background-color: #fff;
    height: 100%;
}

.footer .version .boxl {
    width: 450px;
    height: 185px;
    background-color: #fff;
    float: left;
    margin: 30px 0 0 20px;
}

.footer .version .boxl img {
    margin-bottom: 25px;
}

.footer .version .boxl p {
    font-size: 12px;
    color: #646464;
}

.footer .version .boxl a {
    width: 118px;
    height: 34px;
    border: 1px solid #00a3fa;
    display: inline-block;
    line-height: 34px;
    text-align: center;
    margin-top: 18px;
    color: #00a3fa;
    ;
}

.footer .version .boxr {
    width: 570px;
    height: 169px;
    float: right;
    margin: 30px 30px 0 0;
}

.footer .version .boxr dl {
    float: right;
    width: 130px;
    height: 100%;
    margin-left: 60px;
}

.footer .version .boxr dl dt {
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}

.footer .version .boxr dl dd a {
    color: #333;
    font-size: 12px;
}